Typographical slug casting machine



July 1, 1941. H. BRANDENBURG TYPOGRAPHICAL SLUG CASTING MACHINE Filed May 5, 1940 3 Sheets-Sheet 1 -zl%cv///////77////A 1 7 /n ventar ltd rneqs /nvent0r y v fitter/7:11!

H. BRANDENBURG TYPOGRAPHICAL SLUG CASTIKG' MACHINE Filed-May 3, 1940 July 1, 1941.

July 1, 1941.

H. BRANDENBURG TYPOGRAPHICAL SLUG CASTING MACHINE- Filed May a, 1940 3 Sheets-Sheet 3 hwentor Patented July 1, 1941 TYPOGRAPHICAL SLUG CASTING MACHINE Hermann Brandenburg, Berlin-Tempelhof, Germany, assignor to Mergenthaler Linotype Company, Brooklyn, N. Y., a corporation of New York Application May 3, 1940, Serial No. 333,087 In Germany May 15, 1939 Claims.

This invention relates to typographical slug casting machines such as those known commercially under the registered trade mark Linotype; wherein, when a composed line of matrices and spacebands is presented to the front of a mold, it is positioned between a pair of vise jaws and while so positioned is expanded or justified by the expansion of the spacebands which are driven up through the line by ajustification bar prior to the casting operation.

More particularly, the invention relates to such machines as are equipped with a quadding and centering device whereby the cast type may be offset at one or both ends of the slug or type bar. In such machines, as is also the case with machines which are not so equipped, it is necessary to change the length of the slugs produced and accordingly of the matrix line according to the width or measure of the page or column to be printed. For this purpose the mold slot in which the slugs are cast is made variable in length, and one of the vise jaws, in usual practice the lefthand one, is also made adjustableto correspond, so that lines of one length or another may be used as required.

In known constructions of this kind, one of the vise jaws is usually constructed in such a manner that the vise jaw proper is capable of sliding relatively to a jaw block which is coupled to the operating mechanism of the device. In this arrangement the vise jaw is connected to the jaw block by a locking member in the form of a rack bar which is adapted to engage resiliently in a correspondingly toothed surface. By pressing the locking member in a downwarddirection the locking mechanism is released and the vise jaw may then be moved relatively to the jaw block. The jaw is thus adjusted to the desired line measure, a scale and a longitudinally movable pointer being provided on both of the said parts for the purpose of adjustment.

In this known arrangement, the locking members are subjected to serve strains arising from the pressure exerted upon the jaws when line justification takes place. To these strains must be added blow-like vibrations caused by the sudden contact of the jaws with each other when blank slugs are cast. Further, as there isonly a small amount of space available for'the locking member and. for the parts associated with it, tempered parts made from an expensive metal must be used which, as has been proved in practice, frequently break and give rise to stoppages. Moreover, the inaccessibility of the locking member for longitudinal adjustment of the jaw is a invention relates;

disadvantage and the said adjustment cannot be effected from the operators seatin front of the machine,

The invention provides an adjusting mechanism for the vise jaws by which the disadvantages hereinbefore described are eliminated. It consists in a typographical slug casting machine of the kind referred to having a quadding and centering device for adjusting the matrix line lengthwherein a separate adjustment for one of the vise jaws is provided by means of a single adjustable rod passing through the said vise jaw. Preferably the rod and the vise jaw to bead justed are mounted in such a manner that the strain caused by the adjustment is distributed throughout the length of the vise jaw. In a preferred construction one of. the vise jaws is arranged, so' as to be displaceable, in relation to a guiding carriage which is connected to the operating mechanism of the line quadding and cen tering device, by means of a screw threaded rod, the adjustment of the said rod being effected from a stationary part of the machine. For this purpose the screw threaded rod may, at one end, be 'rotatably mounted in the said'guioling carriage which is conveniently arranged so as to be longitudinally displaceable and the other end of the said rod may be arranged to project telescopically into a stationary sleeve in common with which the rod is rotatable by means such as an adjusting wheel.

This construction allows theadjusting mechanism to be fixed at a convenientdistance from the jaw proper in a position which is easily ac,- cessible from the operators seat, while the strains occurring when the vise jaws become operative are spread over the screw thread which extends along the entire length of the jaw. The invention will now be described in greater detail with reference to the accompanying drawings which illustrate one constructional form which it may assume. In the said drawings:

Figure 1 is a front elevation partly in section of vise jaw adjusting mechanism of a typographical slug casting machine of the kind to which the Figure 5 is a section through the adjusting rod sleeve on the line B-B of Figure 2. 1

Referring to the drawings, I and 2 are the block 8.

jaws of a line quadding and centering device of a typographical slug casting machine of the kind referred to, whereof the upper portion only of the operating mechanism is shown in Figure 1. The jaws I and 2 are actuated by the operating mechanism through the quadding links 3, and quad: ding levers 4. The said quadding levers are adapted to be coupled in known manner to the vertical quadding rod by means of the quadding rod control collar 6. The vise jaws I and 2 are rigidly connected to the jaw blocks 1 and 8, The jaw block I to which the jaw l is fast, is longi tudinally displaceable in relation to a guidin carriage 9 which ensures that the jaw I is capable of being independently adjusted in a longituthe maximum line measure divided into 2 em sections.

The invention is not restricted to the constructional form illustrated, but alterations in some details may be carried out without going beyond its'scope. If desired, for instance, the adjustment may be carried'out directly upon the vise jaw I or the jaw blocks I or 8, and other displacement and operating means may also be employed within the scope of the claims which permit an adjustment of the jaws by allowing for the varying distance of movement of the holder.

dinal direction. The guiding carriage 9 is in turn connected to one of the quadding levers4 of the operating mechanism of the quadding and Having described my invention, I declare that v what I claim and desire to secure by Letters Patnt is: g

1. In a slug casting machine of the kind refe'rred to the combination of a pair of line-clampcentering device by means of one of the quadding links 3. The jaw 2 is directly attached to the other quadding link 3 which is secured to the other quadding lever 4 by means of its .jaw

of the jaw adjusting rod I9 engages in a sleeve I3. which extends through a longitudinal aper-- ture in the jaw block 8. The end of the said sleeve I3 is rotatably mounted in a fixed part of the machine, such for instance as the vise top I 4.

The jaw adjusting rod ID in consequence of its attachment to the guiding carriage 9 moves longitudinally therewith and is slidable within the sleeve I3. The jaw adjusting rod I0 is advantageously provided with a flattened portion (see Figure 4) which engages with a similar fiat- I5 in the interior of the sleeve l3, as shown in Figure,5. The rod I0 is slidable in relation to the sleeve I3 along these flattened surfaces which also serve to enable rotary movement of the sleeve I3 to be imparted to the rod I0.

.The rotation of the sleeve I3 is effected bythe operation of gear wheel I6which is also located in the upper part of the vise top I4. The gear wheel I6 is fitted with a gear wheel handle I I and its teeth engage with those on a gear. wheel I8 which in turn engages with a pinion I 9 which is rigidly connected to the sleeve I3. When the gear wheel I6 is rotated, the sleeve I3 and conse quently also the jaw adjusting rod III is rotated by the intermediate gears I8, I9, thereby caus ing the vise jaw I and its jaw block I to be longitudinally displaced. In the construction illustrated in the drawings the rod I0 is provided with a thread having a, nonpareil (6 point) pitch and the gear wheel I6 is provided around its peripherywith a divided scale having 24 sectional markings equivalent to 2 ems per revolution; consequently, the selected transmission ratio between the sleeve and the gear wheel is 1 4. V

The gear wheel I6 moreover drives through gear mechanism an indicator drum 2| which is mounted upon the same shaft as the gear wheel, the said drum being "provided around its periphery with scale divisions serving to indicate means for rotating said sleeve.

ing vise jaws, mechanism for adjusting said jaws relatively to one another for quadding and centering, a rotary adjusting rod in screw threaded engagement with one of said jaws'and means for rot'atingsaid rod to eiTect separate adjustment of said jaw, said means including a rotatable element telescopically connected to the rod.

\ 2. In a slug casting machine of the kind referred to the combination of a pair of line clamping vise jaws, means for adjusting said jaws relativelyto one another for quadding and centering, a guiding carriage connected to said mechanism, a rotary adjusting rod connected to said guiding carriage and engaging with one of said jaws by means of ascrew thread and means for rotating said rodwhile permitting the rod to move longi rotating said rod while permitting the rod to movel'ongitudinally as a unit with the guiding carriage.

4. In a slug casting machine of the kind referred to, the combination of a pair of line clamping vise jaws, mechanism for adjusting said jaws relatively'to one another for quadding and centering, 'a guiding carriage connected to said mechanism, a rotary adjusting rod connected to said guiding carriage and engaging one of said jaws to be separately adjusted by means of a screw thread connection, a sleeve rotatably mounted in the other of said vise jaws, said rod beingslidably engaged in said sleeve, and means forv rotating said sleeve.

5. In a slug casting machine of the kind referred to, the combination of a pair of line clamping vise jaws, mechanism for adjusting said jaws relatively to one another for quadding and centering, a guiding carriage connected to said mechanism, a rotary adjusting rod connected to said guiding carriage and engaging one of'said, jaws to be separately adjusted by means of a'lscrew threadconnection, a sleeve rotatably mounted in the other of said vise jaws, a flattened surface on *said rod, a corresponding interengaging fiattened surface in said sleeve, said rod being slidably engaged in 'said sleeve, and

6-. In a slug casting machine of the kind referred to the combination of a pair of line clamping vise jaws, means for adjusting said jaws relatively to one another for quadding and centering, a guiding carriage connected to said mechanism, a rotary adjusting rod connected to said guiding carriage and engaging with one of said jaws by means of a screw thread, a pinion mounted on said rod, gearing connected to said pinion and a gear wheel connected to said gearing to rotate said rod while permitting it to move longitudinally as a unit with the carriage.

7. In a slug casting machine of the kind referred to the combination of a pair of line clamping vice jaws, means for adjusting said jaws relatively to one another for quadding and centering, a guiding carriage connected to said mechanism, a rotary adjusting rod connected to said guiding carriage and engaging with one of said jaws by means of a screw thread, a pinion mounted on said rod, gearing connected to said pinion, a gear wheel connected to said gearing to rotate said rod, While permitting it to move longitudinally as a unit with the carriage, and an indicator drum connected to said gear wheel, said drum being marked with indications of varying line lengths.

8. In a slug casting machine of the kind referred to the combination of a pair of line clamping vise jaws, mechanism for adjusting said jaws relatively to one another for quadding and centering, a guiding carriage connected to said mechanism, a rotary adjusting rod connected to said guiding carriage and engaging one of said jaws to be separately adjusted by means of a screw thread connection, a sleeve rotatably mounted in the other of said vise jaws,

said rod being slidably engaged in said sleeve, gearing connected to said sleeve to rotate the -same, and a gear wheel driving said gearing.

9. In a slug casting machine of the kind referred to the combination of a pair of line clamping vise jaws, mechanism for adjusting said jaws relatively to one another for quadding and centering, a guiding carriage connected to said mechanism, a rotary adjusting rod [10] connected to said guiding carriage and engaging one of said jaws to be separately adjusted by means of a screw thread connection, a, sleeve rotatably mounted in the other of said vise jaws, said rod being slidably engaged in said sleeve, a pinion mounted on said sleeve, step up gearing connected to said pinion, and a gear wheel connected to said gearing to rotate said rod.

10. In a slug casting machine of the kind referred to the combination of a pair of line clamping vise jaws, mechanism for adjusting said jaws relatively to one another for quadding and centering, a guiding carriage connected to said mechanism, a rotary adjusting rod connected to said guiding carriage and engaging one of said jaws to be separately adjusted by means of a screw thread connection, a sleeve rotatably mounted in the other of said vise jaws, said rod being slidably engaged in said sleeve, gearing connected to said sleeve to rotate the same, a gear Wheel driving said gearing, and an indicator drum connected to said gear wheel, said drum being marked with indications of varying line lengths.

HERMAN N BRANDENBURG. 

